Carmen Sanchez Roberts was an assistant editor for all three major shows in the BBC Wales family of DWU. She began on Doctor Who on Voyage of the Damned, and worked thereafter from series 4 to at least the end of series 6. She was also the assistant editor for the whole of Torchwood: Children of Earth, and for a number of episodes in the final two series of The Sarah Jane Adventures.
Outside of the DWU, she was the assistant editor on the 2010 series of Jean Marsh's wikipedia:Upstairs, Downstairs, directed by Euros Lyn.